Fix bug in tests
Fix bug in tests

The invalid SQL in this test (missing comma) was unnoticed because
the test was provoking a failed before the SQL was parsed, but new
features may cause the SQL to be evaluated (to get affected tables)
before the CartoCSS validity is checked.

CartoDB/Windshaft-cartodb,CartoDB/Windshaft-cartodb,CartoDB/Windshaft-cartodb,CartoDB/Windshaft-cartodb